This detection rule is designed to monitor AWS CloudTrail logs for events where a user is added to a group. The specific event captured is 'AddUserToGroup', which can indicate a potential case of privilege escalation if an unauthorized user is added to a group with elevated permissions. The logic requires querying the AWS CloudTrail logs for events that occurred within the last two hours. By analyzing the event time, any recent additions of users to groups can be detected, which provides an important layer of visibility into user management processes within AWS environments. This is crucial for maintaining security and compliance, as unauthorized changes might signify an exploitation of valid accounts for malicious purposes.